Contributors/Relicensing
We have relicensed the OHRRPGCE source code to GPL2+ & MIT dual license. This will make future porting on to consoles much easier.
However, because of the way the GPL license works, the only way for us to make this change to add the dual MIT license is to get consent from all contributors. This page is for us to track the progress of that process.
As of 2021-12-01 we have collected consent from all the contributors. As of 2024-10-28 The relicense has reached the stable release
Contributors[edit]
| Name | Status | Contact By | Agreement? |
|---|---|---|---|
| James Paige | Contributed code | YES | |
| Ralph Versteegen | Contributed code | YES | |
| Mike Caron | Contributed code | YES | |
| Simon Bradley | Contributed code | YES | |
| David Gowers | Contributed code | YES | |
| Yuriy Melnichenko | Contributed code | YES | |
| Jay Tennant | Contributed code | linkedin/Email | YES |
| Matthias Meike (Wendigo) | Contributed code | YES | |
| Adam Perry | Contributed code | YES | |
| Lakan David D. Inocencio (BMR) | Contributed code | YES | |
| MirceaKitsune (Taoki) | Contributed code | YES | |
| Daniel Würl (DWRL) | Contributed code | YES | |
| SwordPlay | Contributed code | YES | |
| zzo38 | Contributed code | ? | YES |
| Reaxor Jones | Contributed, no code left | not required | |
| MCW | Contributed, no code left | ? | not required |
| Cameron Wilkin (Camdog) | Contributed, no code left | ? | not required |
| Brian Fisher | Non-GPL contributor | not required | |
| Ironhoof | Non-GPL contributor | ? | not required |
| Lenny | Non-GPL contributor | not required |
Libraries[edit]
This is a list of libraries which are either distributed in compiled form either with the source code, or with OHRRPGCE binary distributions. It doesn't include executables distributed with the source or with binary distributions.
| Libraries | Origin | License | Modifications | Inclusion conditions | Copyright/Attribution text |
|---|---|---|---|---|---|
| SDL, SDL2 | https://www.libsdl.org | zlib | - | gfx_sdl[2]/music_sdl[2] | Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org> |
| SDL_mixer, SDL_mixer 2 | https://www.libsdl.org | zlib | Minor patches | music_sdl[2] | Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org> |
| libmad | https://www.underbit.com/products/mad/ | GPL (any) | - | music_sdl[2] with our dlls; music_sdl 32-bit Mac using our SDL_mixer.framework; also runtime linked by Custom if installed, i.e. on Unix | libmad - MPEG audio decoder library
Copyright (C) 2000-2004 Underbit Technologies, Inc. |
| mpg123 | https://www.mpg123.de | LGPLv2.1 | - | music_sdl2 with SDL2_mixer default builds, not our SDL2_mixer.dll | Copyright (c) 1995-2013 by Michael Hipp and others, free software under the terms of the LGPL v2.1 |
| smpeg | https://icculus.org/smpeg/ | LGPLv2 | music_sdl if using default builds | Written by Karl Robillard and Sam Lantinga, Loki Software, Inc.
Streaming MPEG support contributed by Vivien Chappelier. Audio is played through a slightly modified mpegsound library, part of Splay v0.8.2. | |
| libogg/libvorbis | https://xiph.org/vorbis/ | BSD 3-clause | - | music_sdl[2] | Copyright (c) 2002-2020, Xiph.org Foundation |
| opusfile/libopus | https://opus-codec.org | BSD 3-clause | - | music_sdl2 with SDL2_mixer default builds, not our SDL2_mixer.dll | Copyright (c) 1994-2013 Xiph.Org Foundation and contributors
Copyright 2001-2011 Xiph.Org, Skype Limited, Octasic, Jean-Marc Valin, Timothy B. Terriberry, CSIRO, Gregory Maxwell, Mark Borgerding, Erik de Castro Lopo |
| libFLAC | https://xiph.org/flac/ | BSD 3-clause | - | music_sdl[2] with SDL2_mixer default builds, not using our SDL[2]_mixer.dll or SDL_mixer.framework (32-bit Mac) | Copyright (C) 2000-2009 Josh Coalson
Copyright (C) 2011-2016 Xiph.Org Foundation |
| libmodplug | https://github.com/Konstanty/libmodplug | Public domain | - | music_sdl2, or music_sdl with our SDL_mixer.dll | Based on the ModPlug sound engine by Olivier Lapicque <olivierl@jps.net>
XMMS plugin by Kenton Varda <temporal@gauge3d.org> (~2002) Maintainer is now Konstanty Bialkowski <konstanty@ieee.org> (~2006) |
| mikmod | http://mikmod.sourceforge.net/ | LGPL v2+ | - | music_sdl: SDL_mixer default builds unless using our SDL_mixer.dll (our 32-bit SDL_mixer.framework uses mikmod I think?) | Jean-Paul Mikkers, Jake Stine, Frank Loemker and others |
| CrashRpt*.dll/CrashSender*.exe | https://crashrpt.sourceforge.net/ | BSD 3-clause | Yes | Windows builds (runtime-linked if available) | Copyright (c) 2003, The CrashRpt Project Authors. |
| Allegro (alleg40.dll) | https://www.allegro.cc | "gift-ware" | - | gfx_alleg/music_allegro | Shawn Hargreaves and the Allegro contributors
"given to you freely as a gift" ... "If you redistribute parts of this code or make a game using it, it would be nice if you mentioned Allegro somewhere in the credits, but you are not required to do this." |
| Audiere (audiere.dll) | http://audiere.sourceforge.net/ | LGPL (any) | - | music_native[2] | Audiere: A High-Level Sound Playback System
Audiere (c) Chad Austin 2001-2003 |
| libxml2 (win32/libxml2.a) | http://xmlsoft.org/ | MIT | - | Linked into xml2reload | Copyright (C) 1998-2012 Daniel Veillard. All Rights Reserved. |
| libfb | https://freebasic.net/ | LGPL v2.1+ with classpath exception | Mac and Android ports | Always | libfb - FreeBASIC's runtime library
Copyright (C) 2004-2021 The FreeBASIC development team. |
| libfbgfx2 | https://freebasic.net/ | LGPL v2.1+ with classpath exception | - | gfx_fb; also Windows builds (to show version info) |
libgfx2 - FreeBASIC's alternative gfx library Copyright (C) 2005 Angelo Mottola (a.mottola@libero.it) |
Executables[edit]
These are non-library programs which are distributed in compiled form either with the source code, or with OHRRPGCE binary distributions. There is no need to examine these closely, since they do not affect the engine's licensing and are not distributed with games (except Innosetup).
Innosetup, madplay, oggenc, rcedit, zip, unzip, wget, gzip, tar, jpegtran, RetrieveSymbols.exe, cv2pdb, sed, rm, docker/freebasic/FreeBASIC-1.05.0-linux-x86_64.tar.gz, docker/ohrrpgce-build-env/euphoria_4.0.5_amd64.deb, ...
CrashSender*.exe: see Libraries.
External code[edit]
An audit of all the code appearing in the OHRRPGCE code repository (whether used or not) either from external sources (not directly contributed to the OHRRPGCE by its author) or under licenses other than the OHRRPGCE (GPLv2+) license . This list is not finished. The following parts of the source have been completely audited so far: lib/, android/, audwrap/, docker/, misc/, gfx_common/, gfx_directx/, gfx_sdlpp/, vikings/
Unless noted otherwise, all modifications are by OHRRPGCE contributors.
| Files | Origin | License | Modifications | Copyright/Attribution text and notes |
|---|---|---|---|---|
| audiofile.bas | none | GPL (any) | - | OHRRPGCE developers.
Dynamically loads and calls libmad (to read MP3 metadata), which is GPL licensed, therefore this code is also GPL. |
| base64.{c,h} | Gnulib | GPL v2+ | No | Copyright (C) 1999, 2000, 2001, 2004, 2005, 2006 Free Software Foundation, Inc.
Written by Simon Josefsson. Partially adapted from GNU MailUtils (mailbox/filter_trans.c, as of 2004-11-28). Improved by review from Paul Eggert, Bruno Haible, and Stepan Kasal. |
| bitmap.h | FB's winapi headers, translated from MinGW.org (since re-translated from mingw-w64) | Effectively public domain | Yes | MinGW.org (see [1], before release 4.0) (mingw-w64 more explicitly states: "This file has no copyright assigned and is placed in the Public Domain") |
| music_native_subs.bas | SDL_mixer's native_midi/native_midi_common.c | Originally LGPL, converted to GPL by Mike. SDL_mixer (including this module, unchanged) since relicensed to zlib. | Translated to FB, ConvertToRelative added | Copyright (C) 2000,2001 Florian 'Proff' Schulze Ported/extended by Mike Caron |
| rotozoom.c | sdl2_gfx 2.0.4 | zlib | Heavily modified | Copyright (c) 2012-2014 Andreas Schiffler
Andreas Schiffler -- aschiffler at ferzkopp dot net |
| unicode.c (UTF8 decoder) | Flexible and Economical UTF-8 Decoder | MIT | Extended | Copyright (c) 2008-2010 Bjoern Hoehrmann <bjoern@hoehrmann.de>
Copyright (c) 2012,2016-2018 Ralph Versteegen |
| unicode.c (UTF8 encoder) | cutef8 | Public domain (but unicode.c declares the file as MIT licensed) | Added utf8_encode | cutef8 by Jeff Bezanson, placed in the public domain Fall 2005 |
| unicode.c (Unicode composition) | none | MIT (copied from UTF8 decoder) | - | Copyright (c) 2012,2016-2018 Ralph Versteegen |
| misc/generate_unicode_compose_table.cpp | none | Public domain | - | Ralph Versteegen |
| android/extract-pid.awk | Android NDK | Apache 2.0 | No | Copyright (C) 2010 The Android Open Source Project |
| android/gdb-commandline-program.sh | Android NDK's ndk-gdb | Apache 2.0 | Some | Copyright (C) 2010 The Android Open Source Project |
| audwrap/audiere.h | Audiere 1.9.4 | LGPL (any) | Compile fix | (c) 2001-2003 Chad Austin |
| lib/curses_wrap.c | none | Trivial | - | Ralph Versteegen |
| lib/gif.h | https://github.com/rversteegen/gif-h/ (fork of https://github.com/charlietangora/gif-h) |
Unlicense/Public domain | Heavily modified | gif.h by Charlie Tangora
Public domain. Email me : ctangora -at- gmail -dot- com |
| lib/gif.cpp | none | Public domain | - | Ralph Versteegen |
| lib/glibc_compat.c | none | Public domain | - | Ralph Versteegen |
| lib/jo_jpeg.{cpp,h} | jo_jpeg JPEG Writer https://github.com/jpcy/jo_jpeg (forked from jo_jpeg 1.52 https://www.jonolick.com/code) |
Public domain | Modifications by Jonathan Young | Jon Olick |
| lib/lodepng.{c,h} | LodePNG 20190210 | zlib | A bugfix | Copyright (c) 2005-2019 Lode Vandevenne |
| lib/lodepng_gzip.c | LodePNG 20190210 examples | zlib | Majority new | Ralph Versteegen
Copyright (c) 2005-2019 Lode Vandevenne |
| lib/SDL/* (clipboard functions) | SDL 2 | zlib | Heavily modified | Simple DirectMedia Layer
Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org> |
| lib/msvcrt_compat.c | Stack Overflow | Trivial | No | Valentin Milea |
| lib/sha1.{c,h} | SHA-1 in C | Public domain | Minor fixes | By Steve Reid <steve@edmweb.com> |
| lib/stdc++compat.cpp | Mozilla | Mozilla Public License Version 2.0 | Some | Mozilla (mozilla-central has no copyright notices anywhere, even in the licence info!) |
| lib/termcap_stub.c | none | Trivial/Public domain | - | Ralph Versteegen |
| lib/ujpeg.{c,h} | MicroJPEG -- KeyJ's Small Baseline JPEG Decoder 1.3.5 | MIT | Small extensions | Copyright (c) 2009-2016 Martin J. Fiedler <martin.fiedler@gmx.net> |
| lib/win98_compat.bas | none | Trivial/Public domain | - | Ralph Versteegen |
| lib/x11_printerror.c | Xlib (xorg-libX11) | The Open Group license (like the X86Free license, similar to MIT) | Heavily modified | Copyright 2018 Ralph Versteegen
Copyright 1985, 1986, 1987, 1998 The Open Group |
| fb/*.h, gfx_common/fb_scancodes.h | FreeBASIC's libfb/libfbgfx | LGPL with classpath exception | Some (deletions) | Copyright (C) 2004-2016 The FreeBASIC development team. |
| vikings/ | Vikings of Midgard | GPL (any); graphics are public domain; music free with attribution | Upgrades/script fixes | (C) Copyright 2012 Fenrir-Lunaris. this game is distributed under the terms of the GNU General Public License. |
| nohrio (separate repo) | none | GPL (any) | - | David Gowers |
License Summaries[edit]
| Name | Copyleft | Notice requirements on binaries | Other relevant requirements on distributing binaries |
|---|---|---|---|
| GPL | Yes | Must "carry prominent notices stating that it is released under this License", a copy of the GPL, and must tell where to get the source code. Also, "interactive user interfaces" must display "Appropriate Legal Notices" unless the original software didn't. (Language from GPLv3) | Incompatible with closed platforms (many requirements) |
| LGPL | Yes | "If the work during execution displays copyright notices, you must include the copyright notice for the Library among them, as well as a reference directing the user to the copy of this License"; must provide a copy of the LGPL, and tell where to get the source (LGPLv2.1) | Incompatible with closed platforms (must be able to debug modify and relink the library) |
| GPL/LGPL with classpath exception | Yes? | No | None |
| MPL v2 | Yes | "You must inform recipients of the Executable Form how they can obtain a copy of such Source Code Form by reasonable means" (no requirement on how to do so, no copyright notice requirement) | Compatible with closed platforms; EULA can't "attempt to limit or alter the recipients' rights in the Source Code"; |
| BSD 3-clause | No | Reproduce license & copyright notices "in the documentation and/or other materials provided with the distribution" | None |
| MIT | No | Notices "shall be included in all copies or substantial portions of the Software" | None |
| zlib | No | "appreciated but is not required" | None |
Of course, all mentioned licenses mention (except public domain) require preserving copyright and license notices in the source code.